These cards will be displayed in the SDG homepage.
Note there seems to be a strange behavior in cancancan. If we define
these rules:
can :manage, Widget::Card, page_type: "SDG::Phase"
can :manage, Widget::Card
The expected behavior is the first rule will always be ignored because
the second one overwrites it. However, when creating a new card with
`load_and_authorize_resource` will automatically add `page_type:
"SDG::Phase"`.
Similarly, if we do something like:
can :manage, Widget::Card, id: 3
can :manage, Widget::Card
Then the new card will have `3` as an ID.
Maybe upgrading cancancan solves the issue; we haven't tried it. For now
we're defining a different rule when creating widget cards.
Note using `params[:relatable_type].classify` is recognized as a
security risk by some tools. However, it's a false positive, since we've
added constraints to the URL so that paramenter can only have the values
we trust.
